Antisolvent versus ultrasonication: Bottom-up and top-down approaches to produce lignin nanoparticles (LNPs) with tailored properties

Camargos, Camilla H. M.; Rezende, Camila A.

doi:10.1016/j.ijbiomac.2021.10.094

Cited by 50 publications

(48 citation statements)

References 51 publications

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“…To prepare rare-earth-doped aluminate phosphor nanoparticles, the solid-state high-temperature approach [32] was used, followed by the top-down process. [33] Particle sizes were found to be in the 2-10 nm range as reported using a TEM (Figure 1). To keep a certain matrix transparent, nanomaterials have been crucial.…”

Section: Morphological Featuressupporting

confidence: 65%

“…An ES80 Triple Roll Milling system was used to pulverize the phosphor microparticles into nanopowder using a top‐down approach. [ 33 ] Therefore, 10 g of the phosphor microparticles were charged in a ball mill (stainless steel). For 24 h, the phosphor micropowder collided with the silicon carbide ball mill, resulting in the phosphor nanoparticles.…”

Section: Methodsmentioning

confidence: 99%

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Photoluminescent and photochromic smart window from recycled polyester reinforced with cellulose nanocrystals

et al. 2022

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Smart windows with long-persistent phosphorescence, ultraviolet (UV) light protection, high transparency, and high rigidity were developed by easily immobilizing varying ratios of lanthanide-activated aluminate phosphor nanoscale particles within a composite of recycled polyester/cellulose nanocrystals (RPET/CNC). Cellulose nanocrystals were prepared from rice straw waste. Cellulose nanocrystals were used at low concentration as both crosslinker and drier to improve both transparency and hardness. The phosphor nanoscale particles must be distributed into the recycled polyester/cellulose nanocrystals composite bulk without agglomeration to produce transparent RPET/CNC substrates. Photoluminescence characteristics were also studied using spectroscopic profiles of excitation/emission and decay/lifetime. The hardness efficiency was also examined. This transparent recycled polyester waste/ cellulose nanocrystals nanocomposite smart window has been shown to change colour under UV light to strong green and to greenish-yellow when it is dark, as proved by Commission Internationale de l'éclairage (CIE) laboratory colour parameters. It was found that the afterglow RPET/CNC smart window had phosphorescence intensities of 428, 493, and 523 nm upon excitation at 368 nm. There was evidence of improved UV shielding, photostability, and hydrophobic activity. In the presence of a low phosphor ratio, the luminescent RPET/CNC substrates showed quick and reversible fluorescence photochromic activity when exposed to UV radiation.

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Section: Morphological Featuressupporting

confidence: 65%

Section: Methodsmentioning

confidence: 99%

Photoluminescent and photochromic smart window from recycled polyester reinforced with cellulose nanocrystals

et al. 2022

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“…Ultrasonication and solvent-exchange techniques have been performed separately on the same matrix and their efficiencies in the production of LNPs from alkali lignin were compared by Camargos et al [ 53 ]. In detail, the authors discovered that the use of an antisolvent alone led to the synthesis of nanosized spherical and regular LNPs in contrast to what they obtained with the ultrasonication alone, confirming that the combination of the two methods represents the best solution to enhance the LNPs production up to now.…”

Section: Lignin: From Extraction To Chemical Modification For Nanopar...mentioning

confidence: 99%

Lignin as a Natural Carrier for the Efficient Delivery of Bioactive Compounds: From Waste to Health

et al. 2022

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Lignin is a fascinating aromatic biopolymer with high valorization potentiality. Besides its extensive value in the biorefinery context, as a renewable source of aromatics lignin is currently under evaluation for its huge potential in biomedical applications. Besides the specific antioxidant and antimicrobial activities of lignin, that depend on its source and isolation procedure, remarkable progress has been made, over the last five years, in the isolation, functionalization and modification of lignin and lignin-derived compounds to use as carriers for biologically active substances. The aim of this review is to summarize the current state of the art in the field of lignin-based carrier systems, highlighting the most important results. Furthermore, the possibilities and constraints related to the physico–chemical properties of the lignin source will be reviewed herein as well as the modifications and processing required to make lignin suitable for the loading and release of active compounds.

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“…According to the synthesis orientation, nanoparticle synthesis is classified as bottom-up or top-down ( Camargos and Rezende, 2021 ). These methods are further subdivided into several sub-categories in the light of operation, reaction conditions, and procedure.…”

Section: Origin and Synthesis Of Npsmentioning

confidence: 99%

Nanomaterials in Animal Husbandry: Research and Prospects

Wang

Lü

et al. 2022

Front. Genet.

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Anti-inflammatory, antiviral, and anti-cancer treatments are potential applications of nanomaterials in biology. To explore the latest discoveries in nanotechnology, we reviewed the published literature, focusing on co-assembled nanoparticles for anti-inflammatory and anti-tumor properties, and their applications in animal husbandry. The results show that nanoparticles have significant anti-inflammation and anti-tumor effects, demonstrating broad application prospects in animal breeding. Furthermore, pooled evidence suggests that the mechanism is to have a positive impact on inflammation and tumors through the specific drug loading by indirectly or directly targeting the disease sites. Because the precise regulatory mechanism remains unclear, most studies have focused on regulating particular sites or even specific genes in the nucleus by targeting functional co-assembled nanoparticles. Hence, despite the intriguing scenarios for nanotechnology in farmed animals, most results cannot yet be translated into field applications. Overall, nanomaterials outperformed similar materials in terms of anti-inflammatory and anti-tumor. Nanotechnology also has promising applications in animal husbandry and veterinary care, and its application and development in animal husbandry remain an exciting area of research.

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Antisolvent versus ultrasonication: Bottom-up and top-down approaches to produce lignin nanoparticles (LNPs) with tailored properties

Cited by 50 publications

References 51 publications

Photoluminescent and photochromic smart window from recycled polyester reinforced with cellulose nanocrystals

Photoluminescent and photochromic smart window from recycled polyester reinforced with cellulose nanocrystals

Lignin as a Natural Carrier for the Efficient Delivery of Bioactive Compounds: From Waste to Health

Nanomaterials in Animal Husbandry: Research and Prospects

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